On the promotional and initial pressings of Philles 129, "Hung On You" was the main side until extensive airplay of the B side "Unchained Melody", forced that to become the main side. Bill Medley who produced the session which included the Bobby Hatfield solo track "Unchained Melody", was not credited on the promotional or initial release of the single but Phil Spector was credited as producer of "Hung On You".
However, when "Unchained Melody" started to gain popularity and climb the charts, subsequent pressings of the record now credited Phil Spector as the producer of the track.

Philles 130 (11/1965)

Canadian issue

Ebb Tide
(I Love You) For Sentimental Reasons

Philles 132 (10/1966)

Canadian issue

The White Cliffs Of Dover
She's Mine, All Mine

Verve VK 10383 (02/1966)

Canadian issue

(You're My) Soul And Inspiration
B Side Blues

There is an alternate version of "(You're My) Soul And Inspiration" that has been issued on three releases - For further information
click here

Verve VK 10406 (05/1966)

Canadian issue

He
He Will Break Your Heart

Verve VK 10430 (08/1966)

Canadian issue

Go Ahead And Cry
Things Didn't Go Your Way

Verve VK 10449 (10/1966)

Canadian issue

On This Side Of Goodbye
A Man Without A Dream

Verve VK 10479 (02/1967)

Canadian issue

Along Came Jones
Jimmy's Blues

Verve VK 10507 (04/1967)

Canadian Issue

Melancholy Music Man
Don't Give Up On Me

Some pressings of this single play "Melancholy Music Man" at the wrong speed, too slow at 33rpm and too fast at 45rpm.

Verve Celebrity Scene (DJ Box Set) (06/1967)Verve CS 8-5

Verve VK 10520
Go Ahead And Cry
(You're My) Soul And Inspiration

Verve VK 10521
Hold On, I'm Coming
He Will Break Your Heart

Verve VK 10522
I Believe
Melancholy Music Man

Verve VK 10523
Island In The Sun
I (Who Have Nothing)

Verve VK 10524
Something You Got
My Girl

There are pressings in existence of stock copy labels

Verve VK 10551 (09/1967)

Canadian issue

Stranded In The Middle Of Noplace
Been So Nice

Verve VK10577 (01/1968)

Here I Am
So Many Lonely Nights Ahead

Haven 7002 (05/1974)

Rock And Roll Heaven
I Just Wanna Be Me

Haven 7004 (08/1974)

Give It To The People
Love Is Not A Dirty Word

Haven 7006 (10/1974)

Dream On
Dr. Rock And Roll

Haven 7011 (03/1975)

Never Say I Love You
High Blood Pressure

The promotional issue of "Never Say I Love You" has a reduced intro of 9 seconds, the standard version of the song has an intro of 32 seconds

Haven P-7014 (1975)

Young Blood

Both sides of the Haven 7014 release were initially released as promotional singles before it was decided that "Substitute" was to be the main side.

Haven P-7014 (1975)

Substitute

Haven 7014 (1975)

Substitute
Young Blood

Haven HS 800 (03/1976)

Hold On (To What You Got)
Let Me Make The Music

Haven HS 800-D (Disco Version) (03/1976)

Hold On (To What You Got)
Hold On (To What You Got)

Same
extended mix on both sides
Although the label does indicate that the tracks are in stereo, some issues are in fact mono on both sides.

Righteous Brothers EP's

You've Lost That Lovin' Feelin'
You'll Never Walk Alone
Unchained Melody
The Great Pretender

Righteous Brothers interview record

Microgroove 167 (02/1967)

Interview Special With Patricia Crowley

Following their appearance on the 11 February 1967 MGM TV Show "Please Don't
Eat The Daisies"

Righteous Brothers MGM/Verve reissues

Verve VK 138/138SS (1968)
(Sounds Of Fame Reissue Series)

You've Lost That Lovin' Feelin'
Georgia On My Mind

Verve VK 139 (1968) (Sounds Of Fame Reissue Series)

Unchained Melody
Hung On You

Verve VK 140/140SS (1968) (Sounds Of Fame Reissue Series)

Ebb Tide
He

Verve VK 141/141SS (1968) (Sounds Of Fame Reissue Series)

Just Once In My Life
The White Cliffs Of Dover

Verve VK 142 (1968)
(Sounds Of Fame Reissue Series)

(You're My) Soul And Inspiration
Little Latin Lupe Lu

Mono issues of this single have an alternate version of "(You're My) Soul
And Inspiration".
There is a definite way of establishing whether it is the alternate
version without having to play the record. Etched in the deadwax
(the run out before the label) is the master number, if this is
"65 VK 634-M" it is the alternate version - IT MUST INCLUDE
THE "M" the standard version doesn't include the "M"

Rock And Roll Heaven
(B side - Shirley & Lee - Let The Good Times Roll)

Stardust 1294

You've Lost That Lovin' Feelin'
(You're My) Soul And Inspiration

Stardust 1316

Unchained Melody
(You're My) Soul And Inspiration

Rock And Roll Greatest Hits G107
78rpm Juke Box record

Unchained Melody
You've Lost That Lovin' Feelin'

Righteous Brothers (Bobby Hatfield &
Jimmy Walker)

Verve VK 10648 (11/1969)

Woman, Man Needs Ya
And The Party Goes On

Verve VK 10649 (1969)

Po' Folks
Good N' Nuff

Righteous Brothers bootleg singles

Lake 2000

Don't Give Up On Me
(B side - Ronnie Baxter - Someone To Love Me)

Apart from this bootleg, this track was only ever issued as the B side of "Melancholy Music Man" single on Verve 10507 in April 1967

Philles 124 (1979)

You've Lost That Lovin' Feelin'
There's A Woman

Philles 129 (1979)

Unchained Melody
Hung On You

Both the above singles originate from a record company in
Hollywood that bootlegged a series of records from the Philles label in
1979, all were on a thin line blue label. The Righteous Brothers two singles
were unusual in that they are in stereo (except "There's A Woman") and
the stereo channels have been switched over from the original stereo album
issues.

The singles were issued on coloured vinyl as well as the standard black,
they are not particularly rare or valuable but do crop up for sale where
they are often confused for the original Philles issues.